Attoenets



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A. vLANG & T. W. TALBOT.

SASH BALANCE.

Patnted Nov. 9, 1886.

R 0 ml N E V m WITNBSSES ATTORNEYS.

NA PETERS. Phnwmhogmphcr. washington, D. C4

UNITED STATES.

PATENT OFFICE.

ALOIS LANG AND THOMAS W. TALBOT, OF FLORENCE, SOUTH CAROLINA; SAID TALBOT ASSIGNOR TO SAID LANG.

sAsH-BALANCE.

SPECIFICATION forming part of Letters Patent N o. 352,415, dated November 9, 1886.

Application filed April 1, 1886. Serial No. 197,484. (No model.) y

To all whom, it may concern:

Be it known that we, ALoIs LANG and THOMAS W. TALBOT, of Florence, in the county of Darlington and State of South Carolina, have invented a new and useful Improvement in Sash-Balances, of which the following is a specification.

Our inventionis an improvement in counterbalances for weights,and is especially intended for use in connection with a window-sash.

While, as stated, the invention is especially intended for use in connection with Windowsashes, and for convenience of illustration is shown in such connection, and while the appended claims contain clauses referring specically to window-sashes, we do not limit the invention to such use, as it will be understood -that it may be used to balance gasometers,

signs, vertically-movable lamps, and other obao jects which may be moved vertically and which inlever power.

The invention further consists in certain novel constructions and combinations of parts, as will be hereinafter described, and .pointed out in the claims'.

In the drawings, Figure l is a face view of our improvement applied to a window, in which connection we will describe the same. Fig. 2 is a detail side view of the bracket, spring, and bolt.v Fig. 3 shows a different disposition of the connectingcord from that shown in Fig. 1.

In carrying out our invention We provide a bracket, A, pivoted at a to the window-frame or other suitable support, and having a iootpiece or flange, B, which latter is provided with a perforation, b. Through this perforation b projects abolt, C, having its upper end threaded to receive a nut, 1, which constitutes the stop for the spring D, and having its lower end of the spring-connection` along the lever. The

outer arm, 4, of the lever is connected with the sash or other object to be raised, usually by means of cord F, secured at one end to the window-frame or other support, passed thence around a pulley, on the arm 4, a pulley, 7, on the window-frame and secured at its opposite end to the Window-sash.

Instead of the arrangement of the cords Y shown in Fig. 1 it will be understood that that shown in Fig. 3 might be used. It will also be understood that instead of the bracket and bolt and arrangement of spring as described, and which are preferred, the spring might be connected at one end to a support and have at its opposite end a ringror other device engaging the lever, so it could adjust 'along the arm of the lever. In this last case the spring would Vloe practically `connected directly with the 1ever instead of through the intervention of a separate connection. Y

In ldotted lines, Fig. l, we show the sash drawn down. It will be seen that when at the full-line position of the parts the spring is eX- p'anded and acts with the least tension on the lever, and that in such position it has the advantage of the greatest leverage, whilein the dotted position the spring is compressed and acts with the greatest force on the lever, but has been adjusted to such point that it has but a slight leverage, thus loss or gain in spring power or tension is compensated bya proportionate gain or loss in leverage by the movement of the springconneetion along the arm of the lever. j

Having thus described our invention,what We claim as new is- 1. An improved sash-balance, comprising a lever pivoted between its arms or ends and having one end adapted for connection with ing between the footpiece of t-he bracket and between its ends and having one end curved and inserted through the bifu reated end of the bolt and a spring placed on the bolt and bearthe stop of the bolt, substantially as set forth.

3. The combination, with a window-sash and frame, of' a pivoted lever having one arm provided with a pulley, a spring'eonnected 2o with and movable along the opposite arm of the lever,and a cord connected at one end with the Window-frame, disposed thence around guide-pulleys on the lever and the Windowframe and'secured at its opposite end to the z5 sash, substantially as set forth.

ALOIS LANG. THOMAS W. TALBOT.

Vitnesses:

R. A. MoGoRKLE, CHAS. BUTTMANN. 

